Is 7.5 Seconds the Correct Time for a Train to Cross a 165m Railway Platform?

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In summary, the speed of the train is 110 meters/3 seconds. Using this ratio, the time taken for the train to cross a railway platform 165 m long is 7.5 seconds. The correct answer is 7.5 seconds, not 8 seconds as stated in the notes.
  • #1
alijan kk
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Homework Statement


If a train 110 m long passes a telegraph pole in 3 seconds, then the time taken by it to cross a railway platform 165 m long is :

Homework Equations



The Attempt at a Solution


110 meters/3 seconds = speed of train

using this ratio

((110 m)/(3 seconds)) * (110m+165m)=7.5 seconds

the ans in my notes is 8 second , is it a possible answer?
 
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  • #2
alijan kk said:

Homework Statement


If a train 110 m long passes a telegraph pole in 3 seconds, then the time taken by it to cross a railway platform 165 m long is :

Homework Equations



The Attempt at a Solution


110 meters/3 seconds = speed of train

using this ratio

((110 m)/(3 seconds)) * (110m+165m)=7.5 seconds

the ans in my notes is 8 second , is it a possible answer?

As before ##7.5s## is correct.
 
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Related to Is 7.5 Seconds the Correct Time for a Train to Cross a 165m Railway Platform?

1. How is the time taken by a train calculated?

The time taken by a train is calculated by dividing the distance traveled by the train by its speed. This gives the time taken in hours or minutes, depending on the units of distance and speed used.

2. What factors can affect the time taken by a train?

The time taken by a train can be affected by various factors such as the speed of the train, the distance between stops, the number of stops, the condition of the tracks, the weather, and any delays or disruptions along the route.

3. Can the time taken by a train vary from one trip to another?

Yes, the time taken by a train can vary from one trip to another due to factors such as the train schedule, the number of passengers, any delays or disruptions, and the overall efficiency of the train service.

4. How does the time taken by a train compare to other modes of transportation?

The time taken by a train can vary greatly depending on the distance and route, but in general, trains tend to be faster than buses and cars for longer distances, but slower than airplanes for longer distances. However, trains are often more reliable and have less travel time variability compared to other modes of transportation.

5. Is the time taken by a train affected by the weight of the train?

Yes, the weight of the train can affect the time taken for it to reach its destination. Heavier trains may require more power and time to accelerate and decelerate, which can result in longer travel times. However, the weight of the train is just one of many factors that can impact the time taken by a train.

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